| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SS | Geylang Bahru |
| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SS | Bedok Reservoir |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
| Certis Group | Central | Commercial | SO | SS | Bukit Batok |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Bukit Batok |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SS | Bukit Batok |
| Star Security Services | Island Wide | - | Security Mgt | SS | Bukit Batok |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Bukit Batok |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Bedok |
| PICO Guards Pte Ltd | East | Industrial / Factory | SO | SS | Punggol |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| TwinRock Global | Central | - | Security Mgt | SS | Choa Chu Kang |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Inhouse Employer | West | In-House | OM | SS | Choa Chu Kang |
| PICO Guards Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Choa Chu Kang |
| Shangri-La Rasa Sentosa, Singapore | South | Hotel | OE | SS | Sengkang |
